首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
The new paper was spurred by the discovery of several 120,000-year-old tools at a desert archaeological site in the United Arab
The new paper was spurred by the discovery of several 120,000-year-old tools at a desert archaeological site in the United Arab
admin
2020-02-12
100
问题
The new paper was spurred by the discovery of several 120,000-year-old tools at a desert archaeological site in the United Arab Emirates. The presence of the tools—whose design is uniquely African, experts say—so early in the region suggests early humans marched out of Africa into the Arabian Peninsula directly from the Horn of Africa, roughly present-day Somalia. Previously, scientists had thought humans first left via the Nile Valley or the Far East.
"Up till now we thought of cultural developments leading to the opportunity of people moving out of Africa," said study co-author Hans-Peter Uerpmann, a retired archaeobiologist at the University of Tubingen in Germany. "Now we see, I think, that it was the environment that was the key to this," Uerpmann said during a press briefing Wednesday.
During the past few years, a series of tools were discovered at the Jebel Faya site in the U.A.E., some of which—such as hand axes—had a two-sided appearance previously seen only in early Africa. Scientists used a specific technique, which measures naturally occurring radiation stored in the sand, to determine the age of sand grains buried with the stone tools. For the climatic data, scientists studied the climate records of ancient lakes and rivers in cave stalagmites, as well as changes in the level of the Red Sea. This warmer period 130,000 years or so ago caused more rainfall on the Arabian Peninsula, turning it into a series of abundant rivers that humans might have boated. During this period the southern Red Sea’s levels dropped, offering a "brief window of time" for humans to easily cross the sea—which was then as little as 2.5 miles wide, according to Adrian Parker, a physical geographer from Oxford Brookes University in the United Kingdom.
Once humans entered the peninsula, they dispersed and likely reached the Jebel Faya site by about 125,000 years ago, according to the study, published in the journal Science. Geneticist Spencer Wells called the discovery a "very interesting find," especially because the Arabian Peninsula is becoming a hot spot for archaeological finds. But he noted that the study doesn’t "rewrite the book on what we know about human migratory history." That’s because tools dating to the same period have already been found in Israel, so it’s "consistent with what we suspected" about an earlier wave of migration into the Middle East, said Wells, director of the National Geographic Society’s Genographic Project. Wells also noted there’s no evidence yet that the migrants in the new paper were our ancestors—the group, and their genes, may have died out long ago.
Bence Viola, of the Max-Planck-Institute for Evolutionary Anthropology in Leipzig, Germany, agreed the finding was interesting but not that surprising, also citing the evidence of humans in Israel about 120,000 years ago. Viola, who wasn’t involved in the study, added that the migration route proposed in the paper makes sense on another level—the Arabian Peninsula would have been something early humans were used to. Why they migrated is another question, since they wouldn’t have been hurting for food or resources in their African homeland, Viola noted. "Curiosity," he said, "is a pretty human desire."
[A] said that the Red Sea was as little as 2.5 miles wide 130,000 years or so ago.
[B] noted that the study doesn’t rewrite the human migratory history that we know.
[C] said that the environment was the key to people’s moving out of Africa
[D] was the place where some tools previously seen only in early Africa were discovered.
[E] said that people migrated because they lacked food and resources in their African homeland.
[F] said that the migrants in the new paper were our ancestors.
[G] noted that the reason why early humans moved out of Africa is another question.
Hans-Peter Uerpmann
选项
答案
C
解析
Hans-Peter Uerpmann出现在第二段。该段末句提到,魏尔波曼在周三的一次新闻发布会上表示现在我们应该明白环境才是关键。C项中的environment和the key to复现了原文原词,而people’s moving out of Africa即文中this所指的内容,故确定C为答案。
转载请注明原文地址:https://kaotiyun.com/show/fEY4777K
0
考研英语二
相关试题推荐
Studythefollowingchartscarefullyandwriteanessayinwhichyoushould:1)describethechartsbriefly,2)interpretthec
Robertseldomhastheopportunitytodatewithher.Becauseherfamily______hertostayoutafterdarkness.
Overthepastdecade,manycompanieshadperfectedtheartofcreatingautomaticbehaviors-habits-amongconsumers.Thesehabits
Thequestioningoftheroleofthepubliegalleryisnotanewphenomenon.Itissomethingthathasbeenarguedoversinceitsv
LastweekendKyleMacDonaldinMontrealthrewapartytocelebratethefactthathegothisnewhomeinexchangeforaredpaper
Theprocessofperceivingotherpeopleisrarelytranslated(toourselvesorothers)intocold,objectiveterms."Shewas5feet
[A]Bringavisualreminder[B]Eatnothingbeforeshopping[C]Primeyourselfforhealthyeating[D]Useahalf-sized
Britain’sflexiblelabourmarketwasaboonduringtheeconomicslump,helpingkeepjoblessnessdownandthen,whentherecovery
Britain’sflexiblelabormarketwasaboonduringtheeconomicrecession,helpingkeepjoblessnessdownandthen,whentherecov
Britain’sflexiblelabormarketwasaboonduringtheeconomicrecession,helpingkeepjoblessnessdownandthen,whentherecov
随机试题
《中国药典》(2000年版)一部规定“精密称定”系指称取重量应准确至所取重量的
治疗寒积便秘,大黄宜搭配()
某纺织公司诉某服装公司欠款20万元,法院判决纺织公司胜诉,执行过程中法院发现服装公司无力偿还,但某商场欠服装公司货款10万元,早已到期,一直未还。请回答以下问题。此种情况下,谁可以提出执行商场的到期债务?
组织文化贯穿组织的各个方面,从层次上主要分为物质文化、精神文化、制度文化等;从形态上看,又包括行为规范、规章制度、精神风貌以及道德标准等。其核心是()。
某甲受过某乙的羞辱,一直想报复某乙。一天,某甲邀集了某丙等十几人与某乙等四人在一酒吧内斗殴,结果造成某乙重伤。对某甲的行为应当依照()定罪处罚。
20世纪后期,陕西凤雏村出土了刻有“凤”字的甲骨四片,这些“凤”字的形体大致相同,均为头上带有象征神权或王权的抽象化了的毛角的短尾鸟。东汉许慎《说文解字》云:“鸑鷟,凤属,神鸟也。……江中有鸑鷟,似凫而大,赤目。”据此,古代传说中鸣于岐山、兆示周王朝兴起的
根据下列材料,回答问题。2019年5月8日,国务院公布《重大行政决策程序暂行条例》,自2019年9月1日起施行。早在2012年3月,就有人指出,我国行政程序规则缺失,行政权力高度集中,很容易产生长官意志、主观主义和行政乱作为。以公开、公正和效率
有黑、白棋子共300枚,按每堆3枚分成100堆,其中只有1枚白子的共27堆,有2枚或3枚黑子的共42堆,有3枚白子的与有3枚黑子的堆数相等,那么全部棋子中,白子共有多少枚?
设f(u)连续可导,且∫04f(u)du=2,L为半圆周y=,起点为原点,终点为B(2,0),则∫Lf(x2+y2)(xdx+ydy)=___________.
A老师,我对中国书法很感兴趣。B其中有一家在图书馆里面,那里的书很便宜。C太好了!我们班同学都去吗?D不会,但是我很想学。您能给我介绍一位老师吗?E谢谢老师,我很想去,就怕演不好。你会弹钢琴吗?()
最新回复
(
0
)